Whistle attachment for gas-engines.



No. 757,673. v PATENTED APR. 19, 1904.

W. L. PAUL V WHISTLE ATTAGEMENT FOR GAS ENGINES.

A PPLIOATION FILED GOT. 8. 1903.

no MODEL.

*wvcaum I v (j I Gamm rm: woams PEi'ERs no, nuvou'ma. wasmnoroNQ-nii Patented April 19, 1904.

UNITED STATES. PATENT OFFICE.

WILLIAM L. PAUL, or DAVIS, NORTH CAROLINA.

WHISTLE ATTACHMQENT FOR GAS-ENGINES.

SPECIFICATION forming part of Letters Patent N0. 757,673, dated. April 19, 1904.

Application filerl October s, 1903.

To all whom it mayconeern:

Be it known that I, WILLIAM L. PAUL, a citizen of the United States, residing at Davis, in the county of Oarteret and State of North Carolina, have invented certain new and useful Improvements in Whistle Attachments for Gas-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an attachment for gas-engines or the like; and itconsists of cerwhich Figure 1 shows a side elevation of my invention as applied to an ordinary gas-engine. Fig. 2 is a longitudinal central section of my attachment, showing the relative position of the whistle and means for operating'the same. Fig. 3 is a horizontal sectionrof Fig. 2 on line 8 3, while Fig. 1 is a detail view showing the operating-crank for controlling the travel of the exhaust.

, The details of my invention and cooperating accessories will for convenience be designated by numerals, the same numeral applying to a similar part throughout the several views.

Referring to the numerals on the drawings, 1 indicates the base portion usually employed in supporting the engine proper, 2, designed to be actuated by successive explosions of gas, while 3 designates the tubular body of my ex haust tube or port. The exhaust-tube 3 is divided transversely by the formation of a valveseat 4:, designed to receive the valve 5, which Serial No. 176,268- (No model.)

is carried by the valve-stem 6, the latter being vertically disposed in suitable bearings provided by the brackets 7 and 8, as clearly shown in Fig. 2. a

The lower end of the stem 6 is operatively connected to the crank-arm 9 on the crankshaft 10 by means of the link-section 11, it being understood that said crank-shaft is provided with a suitable hearing or supporting bracket 12 at its outer end, attached to the lower side of the auxiliary chamber 13, the opposite end of said crank-shaft being arranged to pass through suitable stuffing-boxes 14 and '15, whereby the escape of products of gas combustion will be prevented. The lower end of the tubular exhaust or pipe 3is properly connected with the exhaust-chamber 16, as by having its end threaded in a suitable aperture, as shown in Fig. 2.

It will be observed by reference to Fig. 2 that the auxiliary chamber 13 may be cast or otherwise formed intregal with the exhausttube 3, it being understood that the lower end of the auxiliary chamber 13 shall be placed in communication with the chamber in the exhaust-tube 3 below the valve-seat 4. I also provide for the lower end of the auxiliary chamber 13 a valve-seat 17 and the valve 18 adapted to fit into theupper side of said seat,

said valve 18 having a suitable guiding-stem 19 seated in an aperture in the supportinghrackets 20 and 21. I also provide a shoulder or collar 22 and secure it to the stem 19 intermediate the brackets 20 and 21, and it is obvious that by locating the spring 23 around the stem between the bracket 21 and the fixed collar or shoulder 22 the valve will be held normally downward or in its seat 17, and thereby in a closed position. to hold the valve 5 normally downward or in an open position by means of the arm 24, controlled by the spring 25, as more clearly shown in Fig. 4:, said arm 24 being secured I also arrange in proper relationship by the set-screw 26, as

of combustion and directing them laterally into the lower end of the auxiliary chamber 13 and the force thereof under pressure will overcome the tension of the spring 23 and raise the valve 18 out of its seat, thus per.- mitting such products to pass into the upper end of the auxiliary chamber 13 to become sufliciently condensed or under pressure to operate the whistle 28, as will be obvious. hen it is desired ,to discontinue blowing the whistle, all that is necessary to be done by the operator is to partially rotate the crankshaft 10 through the mediation of the handle 27, which will draw the crank-arm 9 downward and incidentally lower the valve 5 and open a way for the exhaust to pass directly upward through the tubular vent or casing 3 and thence into the open air. It is therefore obvious that the whistle 28 may be operated at will by simply partially rotating the crankshaft 10 sufliciently to raise the valve 5, and

thereby divert the movement of the products of gas combustion into the auxiliary chamber 13 to overcome the tension of the spring 23 and provide a passage-way through said auxiliary chamber into operative communication with the whistle.

It will thus be seen that I have provided very simple though reliably efficient mechan- What I claim as new, and desire to secure by Letters Patent, is v 1. The herein-described means for storing and utilizing the exhaust of gas-engines to blow a whistle, comprising the combination with a gas-engine cylinder, of an exhaust tube or port 3, an auxiliary storage-chamber 13, said auxiliary chamber communicating with said exhaust-port 3, a valve 5 located in said port 3, having a stem 6, a shaft having a crank-arm, a link connecting said crank-arm and stem 6, means to partially rotate said shaft whereby said valve 5 may be opened or closed, a valve 18 in the auxiliary chamber 13 and means to hold said valve normally closed, and awhistle communicating with said auxiliary chamber, as set forth.

2. In combination with the cylinder of a gas-engine, ofanexhaust-chamber 3, an auxiliary chamber 13 formed integral therewith, said chambers having a communicating passage, a valve 5 located in said exhaust-chamber and above said communicating passage, whereby when said valve is closed the exhaust-gases will be forced through said passage into the auxiliary chamber 13, a valve 18 at the lower end of said auxiliary chamber adapted to be opened by the pressure of the exhaust-gases, a stem for said valve, brackets designed to receive said stem and retain the valve in place, a spring surrounding said stem between said brackets, designed to close said valve 18 when the valve 5 is opened, and a whistle communicating with said auxiliary chamber, as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM L. PAUL.

-Witnesses:

HARRY E. FRIsBrE, JAMES F. WILLIS. 

